添加两个json对象并进行排序 [英] Adding two json objects and sorting

问题描述

我有三个类似的json对象。现在我希望加入整个列表，然后根据索引之一对完整列表进行排序。在这里，去对象描述

I have got three similar json objects. Now i wish to join the entire list and then sort the complete list according to one of the index. Here, goes the objects description

对象1

[{"link":"#","prod":"Fundamentals Of Software Engineering","price":" Rs. 200 "},{"link":"##","prod":"Real-Time Systems: Theory And Practice","price":" Rs. 394 "}]

对象2

[{"link":"#","prod":"Fundamentals Of Software Engineering","price":" Rs. 200 "},{"link":"##","prod":"Real-Time Systems: Theory And Practice","price":" Rs. 394 "}] 

对象3

[{"link":"#","prod":"Fundamentals Of Software Engineering","price":" Rs. 200 "},{"link":"##","prod":"Real-Time Systems: Theory And Practice","price":" Rs. 394 "}] 

有一次，我加入所有这些，我希望将整个数组（新的）排序到价格指数。

Once, I join all of them , I wish to sort the complete array (new one) w.r.t to price index.

任何提示都将不胜感激。
谢谢：）

Any hint for this will be appreciated. thanks :)

推荐答案

如果Object1，Object2和Object3是JSON字符串，则使用<$ c将其转换为Javascript对象$ c> eval function。

if Object1 , Object2 and Object3 are JSON strings convert it to Javascript objects using eval function.

然后使用 concat 方法合并它们。
http://www.w3schools.com/jsref/jsref_concat_array.asp

Then merge them using concat method. http://www.w3schools.com/jsref/jsref_concat_array.asp

var mergedArray = arr1.concat(arr2, arr3);

然后在Javascript数组中使用 sort 方法排序。
ref： http://www.w3schools.com/jsref/jsref_sort.asp
ref： https://developer.mozilla.org / en / JavaScript / Reference / Global_Objects / Array / sort

Then sort using sort method in Javascript Array. ref : http://www.w3schools.com/jsref/jsref_sort.asp ref: https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/sort

var sorted = mergedArray.sort(function(a, b){

    // This function is used by sort method for sorting process
    // This function gets called with parameters a,b which are the elements in array (here product objects from your JSON)
    // if this function returns value < 0 a is placed before b
    // if this function returns 0 nothing is changed
    // if this function returns value > 0 b is placed before a
    // a.price.replace("Rs.", "") removes Rs. from price string. so "Rs. 200" becomes 200
    // parseFloat(a.price.replace("Rs.", "")) makes it number.  "200" becomes 200. "200.50" becomes 200.5
    // priceA - priceB returns -ve value if priceA < priceB, 0 if priceA = priceB, +ve value if priceA > priceB.

    var priceA = parseFloat(a.price.replace("Rs.", ""));
    var priceB = parseFloat(b.price.replace("Rs.", ""));
    return priceA - priceB;



});

使用返回价格B - priceA; 进行降序订购。
jsfiddle： http://jsfiddle.net/diode/FzzHz/

Use return priceB - priceA; for descending order. jsfiddle : http://jsfiddle.net/diode/FzzHz/

。

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